package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Objects;

@Service
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;

    //新增套餐
    @Override
    @Transactional
    public void saveWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);

        setmeal.setStatus(StatusConstant.DISABLE);

        //向套餐表中插入1条数据
        setmealMapper.insert(setmeal);

        //setmeal.setStatus(StatusConstant.DISABLE);

        //获取insert语句生成的主键值
        Long setmealId = setmeal.getId();

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();

           /* setmealDishes.forEach(setmealDish -> {
                        setmealDish.setDishId(setmealId);*/



        setmealDishes.forEach(setmealDish -> {
            setmealDish.setDishId(setmealId);
        });
        //向套餐关联的菜品表中插入n条数据
        setmealDishMapper.insertBatch(setmealDishes);



    }

    //套餐分页查询
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page=setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }


    //批量删除套餐
    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        for (Long id:ids){
            Setmeal setmeal=setmealMapper.getById(id);
            if (Objects.equals(setmeal.getStatus(), StatusConstant.ENABLE)) {
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
        setmealMapper.deleteByIds(ids);

        setmealMapper.deleteByDishIds(ids);


    }

    //根据id查询套餐
    @Override
    public SetmealVO getByIdWithDish(Long id) {
        Setmeal setmeal=setmealMapper.getById(id);

        List<SetmealDish> setmealDishes=setmealDishMapper.getDishId(id);

        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal,setmealVO);
        setmealVO.setSetmealDishes(setmealDishes);

        return setmealVO;
    }

    //修改套餐
    @Override
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);

        setmealMapper.update(setmeal);
        setmealDishMapper.deleteByDishId(setmealDTO.getId());

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if(setmealDishes!=null&&!setmealDishes.isEmpty()){
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealDTO.getId());
            });
            setmealDishMapper.insertBatch(setmealDishes);
        }
    }

    //起售禁售套餐
    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder()
                .status(status)
                .id(id)
                .build();

        setmealMapper.update(setmeal);
    }
}
